Core - Implemented module priority

Settings UI - Module priority modification UI WIP

src/Artemis.Storage/Entities/Module/ModuleSettingsEntity.cs

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+using System;
+
+namespace Artemis.Storage.Entities.Module
+{
+    public class ModuleSettingsEntity
+    {
+        public Guid PluginGuid { get; set; }
+        public int PriorityCategory { get; set; }
+        public int Priority { get; set; }
+    }
+}

src/Artemis.Storage/Repositories/Interfaces/IModuleRepository.cs

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+using System;
+using System.Collections.Generic;
+using Artemis.Storage.Entities.Module;
+
+namespace Artemis.Storage.Repositories.Interfaces
+{
+    public interface IModuleRepository : IRepository
+    {
+        void Add(ModuleSettingsEntity moduleSettingsEntity);
+        ModuleSettingsEntity GetByPluginGuid(Guid guid);
+        List<ModuleSettingsEntity> GetAll();
+        List<ModuleSettingsEntity> GetByCategory(int category);
+        void Save(ModuleSettingsEntity moduleSettingsEntity);
+    }
+}

src/Artemis.Storage/Repositories/ModuleRepository.cs

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+using System;
+using System.Collections.Generic;
+using Artemis.Storage.Entities.Module;
+using Artemis.Storage.Repositories.Interfaces;
+using LiteDB;
+
+namespace Artemis.Storage.Repositories
+{
+    public class ModuleRepository : IModuleRepository
+    {
+        private readonly LiteRepository _repository;
+
+        internal ModuleRepository(LiteRepository repository)
+        {
+            _repository = repository;
+            _repository.Database.GetCollection<ModuleSettingsEntity>().EnsureIndex(s => s.PluginGuid);
+        }
+
+        public void Add(ModuleSettingsEntity moduleSettingsEntity)
+        {
+            _repository.Insert(moduleSettingsEntity);
+        }
+
+        public ModuleSettingsEntity GetByPluginGuid(Guid guid)
+        {
+            return _repository.FirstOrDefault<ModuleSettingsEntity>(s => s.PluginGuid == guid);
+        }
+
+        public List<ModuleSettingsEntity> GetAll()
+        {
+            return _repository.Query<ModuleSettingsEntity>().ToList();
+        }
+
+        public List<ModuleSettingsEntity> GetByCategory(int category)
+        {
+            return _repository.Query<ModuleSettingsEntity>().Where(s => s.PriorityCategory == category).ToList();
+        }
+
+        public void Save(ModuleSettingsEntity moduleSettingsEntity)
+        {
+            _repository.Upsert(moduleSettingsEntity);
+        }
+    }
+}